摘要
Although public service motivation (PSM) has been extensively studied for decades, its theoretical pathways to job satisfaction (JS)-a central determinant of public institution performance-remain insufficiently articulated. This study fills this theoretical gap by proposing a dual-path mediation model wherein person-organization fit (PO-fit) and perceived accountability jointly elucidate how PSM enhances JS. Drawing on survey data from 1098 employees of the Taiwan Railways Administration, a public utility undergoing institutional reform, the study employs partial least squares structural equation modeling (PLS-SEM) to test our model. The results indicate that three dimensions of PSM-attraction to public service, commitment to public values, and compassion-positively affect JS through both direct and indirect pathways. PO-fit fosters value congruence between employees and organizations, while perceived accountability strengthens moral responsibility and intrinsic fulfillment. Theoretically, the study advances PSM research by integrating value alignment and accountability mechanisms into a unified motivational framework. Practically, it offers guidance for human resource strategies that cultivate a motivated, satisfied, and accountable workforce-an essential condition for achieving SDG 9 (Industry, Innovation, and Infrastructure) and SDG 16 (Peace, Justice, and Strong Institutions).